抱伦金矿尼尔森重选-浮选工艺研究与应用  

Research and application of Nelsen gravity separation-flotation process in Baolun Gold Mine

作　　者：王小生 陈贵民 张建 韩琪 聂飞 苏文亮 陈书军 Wang Xiaosheng;Chen Guimin;Zhang Jian;Han Qi;Nie Fei;Su Wenliang;Chen Shujun(Baoting County Bureau of Natural Resources and Planning;Hainan Shandong Gold Mining Co.,Ltd.)

机构地区：[1]保亭县自然资源和规划局 [2]海南山金矿业有限公司

出　　处：《黄金》2021年第6期69-73,77,共6页Gold

摘　　要：抱伦金矿针对尾矿库库容不足,采用氰化工艺环保压力大等问题,根据矿石性质,开展了重选—浮选联合工艺研究,探索了一段磨矿重选—再磨浮选、两段磨矿两段重选—浮选等联合工艺,并进行了生产应用。结果表明:采用两段磨矿两段重选—浮选联合工艺,即尼尔森重选—柱机联合浮选工艺,替代重选—氰化工艺,取得了良好的金回收指标,生产中金回收率达到91.53%,且尾矿达到一般工业固体废物第Ⅰ类标准,满足国家环保要求,节省了尾矿库一次性投资5500万元,尾矿库运行成本年减少500余万元,尾矿外售年增效益70万元,经济效益和社会效益显著。Since the storage capacity of the tailing pond in Baolun Gold Mine is insufficient,the cyanidation process adopted is under pressure because of environmental protection challenges.According to the ore property,a joint gravity separation-flotation process is studied.During the study,joint processes are explored such as one-stage grinding gravity separation-regrinding flotation and two-stage grinding two-stage gravity-flotation,and are applied in production.The results show that the two-stage grinding two-stage gravity-flotation joint process,that is Nelson gravity separation-joint column machine flotation,replaces gravity separation-cyanidation process and achieves good gold recovery index.During the production,gold recovery rate reaches 91.53%,the tailings meet the GradeⅠgeneral industrial solid waste standards and the national environmental protection requirement,saving 55 million yuan investment in the tailings pond at a single time,reducing annual operation cost of tailings pond by 5 million yuan,increasing tailings sale profits by 0.7 million yuan annually.The social and economic benefits are prominent.

关 键 词：尼尔森 重选 浮选 柱机联合 氰化 

分 类 号：TD953[矿业工程—选矿]